Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

In this activity your child will create their very own marble maze!

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

People have favorite flavors, but what about ants? Which ant food is the most popular?

This science fair project idea demonstrates that plants give off water.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

Discover whether cold or hot water from the faucet will boil faster on the stove.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

This super fun science project, perfect for young children, combines crafts, dressing up as animals, outdoor play, and life science learning.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.